Paul Thannisch, left, and friend, Allie Johnson, get sprayed with a water canon during day 1 of Summerfest, Saturday, June 4, 2011, at Eleanor Tinsley Park in Houston, Texas. (Todd Spoth/For The Chronicle)

Paul Thannisch, left, and friend, Allie Johnson, get sprayed with a water canon during day 1 of Summerfest, Saturday, June 4, 2011, at Eleanor Tinsley Park in Houston, Texas. (Todd Spoth/For The Chronicle)

Firefighter Ryan Black of Station 17 cools off at scene of a fire at the corner of the 1600 block of Orr and 3000 block of Elysian Thursday, June 25, 2009, in Houston. ( Melissa Phillip / Chronicle )

Firefighter Ryan Black of Station 17 cools off at scene of a fire at the corner of the 1600 block of Orr and 3000 block of Elysian Thursday, June 25, 2009, in Houston. ( Melissa Phillip / Chronicle )

Photo: Melissa Phillip, Houston Chronicle

Firefighter Ryan Black of Station 17 cools off at scene of a fire... Photo-5687426.77213 - Houston Chronicle

Image 6 of 33

Andres Loredo hula hoops in the water park at the Downtown Aquarium to escape the heat on Monday, June 21, 2010 in Houston. ( Yasmeen Smalley / Chronicle )

Andres Loredo hula hoops in the water park at the Downtown Aquarium to escape the heat on Monday, June 21, 2010 in Houston. ( Yasmeen Smalley / Chronicle )

Photo: Yasmeen Smalley, Chronicle

Andres Loredo hula hoops in the water park at the Downtown Aquarium... Photo-5687427.77213 - Houston Chronicle

Image 7 of 33

Chris Dusablon gets a drink of water as he takes batting practice at Alexander Deussen Park on Lake Houston, Saturday, Aug. 27, 2011, in Houston. Saturday's high temperature topped out at 109 degrees tying the record high temperature for the city and making it the hottest day in a summer of already record breaking heat. Dusablon was practicing with teammate Chad Valentine for a league game to be played tomorrow at 1:00 p.m. "You have to be used to the heat if you are going to play in it," Valentine said. ( Smiley N. Pool / Houston Chronicle ) less

Chris Dusablon gets a drink of water as he takes batting practice at Alexander Deussen Park on Lake Houston, Saturday, Aug. 27, 2011, in Houston. Saturday's high temperature topped out at 109 degrees tying the ... more

Photo: Smiley N. Pool, Houston Chronicle

Chris Dusablon gets a drink of water as he takes batting practice... Photo-5687428.77213 - Houston Chronicle

Image 8 of 33

Sunny skies and warm temperatures greet spring break visitors on the midway at the Houston Livestock Show and Rodeo on Friday, March 16, 2012, in Houston. (Smiley N. Pool / Houston Chronicle )

Sunny skies and warm temperatures greet spring break visitors on the midway at the Houston Livestock Show and Rodeo on Friday, March 16, 2012, in Houston. (Smiley N. Pool / Houston Chronicle )

Andres Arredondo, 7, rides with his mother Ana Arredondo, 33, early in the morning at Nob Hill Park on Monday, Aug. 13, 2012, in Houston, TX. Partly sunny and high temperatures are expected through out the week. ( Mayra Beltran / Houston Chronicle ) less

Andres Arredondo, 7, rides with his mother Ana Arredondo, 33, early in the morning at Nob Hill Park on Monday, Aug. 13, 2012, in Houston, TX. Partly sunny and high temperatures are expected through out the ... more

Yeny Hernandez and Sonia Ortega power walk early in the morning at Nob Hill Park on Monday, Aug. 13, 2012, in Houston, TX. Partly sunny and high temperatures are expected through out the week. ( Mayra Beltran / Houston Chronicle ) less

Yeny Hernandez and Sonia Ortega power walk early in the morning at Nob Hill Park on Monday, Aug. 13, 2012, in Houston, TX. Partly sunny and high temperatures are expected through out the week. ( Mayra Beltran ... more

Photo: Mayra Beltran, Houston Chronicle

Yeny Hernandez and Sonia Ortega power walk early in the morning at... Photo-5687431.77213 - Houston Chronicle

Image 11 of 33

"I enjoy the humidity when I exercise, but not while working" says Roberto Flores, 30, while running up hill at Harris County Arthur Storey Park on Monday, Aug. 20, 2012, in Houston. Weather expected to be sunny and muggy today. ( Mayra Beltran / Houston Chronicle ) less

"I enjoy the humidity when I exercise, but not while working" says Roberto Flores, 30, while running up hill at Harris County Arthur Storey Park on Monday, Aug. 20, 2012, in Houston. Weather expected to be ... more

Photo: Mayra Beltran, Houston Chronicle

"I enjoy the humidity when I exercise, but not while... Photo-5687432.77213 - Houston Chronicle

Ian Niggli, 3, runs through the fountains at Discovery Green, Wednesday, May 8, 2013, in Houston. He was out with his little sister and grandparents enjoying the warm temperatures downtown Houston. ( Karen Warren / Houston Chronicle ) less

Ian Niggli, 3, runs through the fountains at Discovery Green, Wednesday, May 8, 2013, in Houston. He was out with his little sister and grandparents enjoying the warm temperatures downtown Houston. ( Karen ... more

Ashley Cargle shows off her bathing suit during the Beach Revue bathing beauties contest on Saturday, May 18, 2013, in Galveston. Forty contestants wore 20's and 30's period style bathing suits and competed for cash prizes during this crowd favorite event. ( J. Patric Schneider / For the Chronicle ) less

Ashley Cargle shows off her bathing suit during the Beach Revue bathing beauties contest on Saturday, May 18, 2013, in Galveston. Forty contestants wore 20's and 30's period style bathing suits and competed for ... more

Mindy Jones and Justin Garrett, of The Woodlands, look at daughter Ella Garrett, 2, wear adult sunglasses at East Beach as they beat the Memorial Day weekend crowd on Thursday, May 23, 2013, in Galveston. This Memorial Day weekend nearly 3 million Texans are expected to hit the roadways and pack airports according to AAA. ( Mayra Beltran / Houston Chronicle ) less

Mindy Jones and Justin Garrett, of The Woodlands, look at daughter Ella Garrett, 2, wear adult sunglasses at East Beach as they beat the Memorial Day weekend crowd on Thursday, May 23, 2013, in Galveston. This ... more

Rollo May Damitio and Christina Damitio hit the beach early on this Memorial Day weekend on Thursday, May 23, 2013, in Galveston. This Memorial Day weekend nearly 3 million Texans are expected to hit the roadways and pack airports according to AAA. ( Mayra Beltran / Houston Chronicle ) less

Rollo May Damitio and Christina Damitio hit the beach early on this Memorial Day weekend on Thursday, May 23, 2013, in Galveston. This Memorial Day weekend nearly 3 million Texans are expected to hit the ... more

Photo: Mayra Beltran

Rollo May Damitio and Christina Damitio hit the beach early on this... Photo-5687438.77213 - Houston Chronicle

Image 18 of 33

Jacob Barboza, left, and James Martin, both of Spring, play football with friends on the beach along Seawall Boulevard, Saturday, June 29, 2013, in Galveston. ( Nick de la Torre / Houston Chronicle )

Jacob Barboza, left, and James Martin, both of Spring, play football with friends on the beach along Seawall Boulevard, Saturday, June 29, 2013, in Galveston. ( Nick de la Torre / Houston Chronicle )

NEW YORK - JULY 6: The Richardson family of Brooklyn play in an inflatable pool near their apartment on July 6, 2010 in the Brooklyn borough of New York City. The National Weather Service has issued a heat advisory for parts of the Northeast, mid-Atlantic and parts of Michigan and Kentucky with temperatures in some areas predicted to reach 100 degrees. (Photo by Ramin Talaie/Getty Images) less

NEW YORK - JULY 6: The Richardson family of Brooklyn play in an inflatable pool near their apartment on July 6, 2010 in the Brooklyn borough of New York City. The National Weather Service has issued a heat ... more

Photo: Ramin Talaie, Getty Images

NEW YORK - JULY 6: The Richardson family of Brooklyn play in an... Photo-5687442.77213 - Houston Chronicle

Image 21 of 33

CONTACT FILED: FUNDAY IN THE PARK-HOUSTON
8-20-00 Michael Zemrak, 9, cools off with wet sponges during Funday In The Park at Beverly Hills Park, 10201 Kingspoint, sponsored by the City of Houston Parks and Recreation Dept. Next Sunday 8/27 Funday will be at Willow Park, 10400 Cliftwood. (Chronicle/Melissa Phillip) HOUCHRON CAPTION (09/07/2000): Michael Zemrak, 9, cools off with wet sponges during Funday in the Park Aug. 20 at Houston's Beverly Hills Park. The summer's soaring temperatures set a record - 109 - on
Monday. less

CONTACT FILED: FUNDAY IN THE PARK-HOUSTON
8-20-00 Michael Zemrak, 9, cools off with wet sponges during Funday In The Park at Beverly Hills Park, 10201 Kingspoint, sponsored by the City of Houston Parks and ... more

CONTACT FILED: MEMORIAL PARK-HOUSTON
HPD Officer Steven Grimes cools off with water in Memorial Park after his run Saturday afternoon with the temperature reaching nearly 100 degrees. Officer Grimes is in training for the Police Olympics to be held in Midland June 19. 05/31/2003 (E. Joe Deering/Chronicle). HOUCHRON CAPTION (06/01/2003): HPD officer Steven Grimes cools off after a run Saturday in Memorial Park. The temperature reached 96 degrees at 2:59 p.m., only two degrees lower than 1998's record high. less

CONTACT FILED: MEMORIAL PARK-HOUSTON
HPD Officer Steven Grimes cools off with water in Memorial Park after his run Saturday afternoon with the temperature reaching nearly 100 degrees. Officer Grimes is in ... more

Cemal Yetkiner, from Turkey, takes in the sun in New York's Bryant Park, Wednesday, June 8, 2011. The official start of summer is still two weeks away, but much of the nation is sweating through near-record temperatures, with heat advisories and warnings issued across the Northeast, mid-Atlantic and upper Midwest on Wednesday. (AP Photo/Richard Drew) less

Cemal Yetkiner, from Turkey, takes in the sun in New York's Bryant Park, Wednesday, June 8, 2011. The official start of summer is still two weeks away, but much of the nation is sweating through near-record ... more

Photo: Richard Drew, Associated Press

Cemal Yetkiner, from Turkey, takes in the sun in New York's... Photo-5687446.77213 - Houston Chronicle

Image 25 of 33

Houston Astros starting pitcher Brett Oberholtzer, center, is doused by his teammates after pitching a complete baseball game shutout against the Seattle Mariners at Minute Maid Park on Sunday, Sept. 1, 2013, in Houston. The Astros won 2-0. (AP Photo/Houston Chronicle, Smiley N. Pool) less

Houston Astros starting pitcher Brett Oberholtzer, center, is doused by his teammates after pitching a complete baseball game shutout against the Seattle Mariners at Minute Maid Park on Sunday, Sept. 1, 2013, ... more

Seems families and teenage spring breakers must look out for one another on Crystal Beach along the Bolivar Peninsula so all can have a fun, enjoyable time in the sun. The beach was packed with hoards of high school and college spring breakers trying to stake their piece of the beach. March 18, 1994 less

Seems families and teenage spring breakers must look out for one another on Crystal Beach along the Bolivar Peninsula so all can have a fun, enjoyable time in the sun. The beach was packed with hoards of high ... more

Kacie Broadhurst and Joe Pattavina, of The Woodlands, enjoy sunny skies and warm weather as they paddle on The Woodlands Waterway with their dogs, Carmella and Annie, on Sunday, April 24, 2011 in The Woodlands, Texas. (AP Photo/The Courier, Karl Anderson) less

Kacie Broadhurst and Joe Pattavina, of The Woodlands, enjoy sunny skies and warm weather as they paddle on The Woodlands Waterway with their dogs, Carmella and Annie, on Sunday, April 24, 2011 in The ... more